A bombshell new book threatens to lift the lid on Elizabeth Taylor‘s secret love life, claiming the late screen icon had an affair with Ronald Reagan and engaged in a steamy threesome with John F. Kennedy Jr. and actor Robert Stack, RadarOnline.com is reporting.

According to The Daily Express, Danforth Prince and Darwin Potter write in their new book, Elizabeth Taylor: There Is Nothing Like A Dame, that Taylor embarked on a steamy affair with Reagan when she was a teenager, after the 36-year-old invited the then teenage actress to dinner and she seduced him!

“Reagan was treating me like a grown woman, and that thrilled me,” the book claims Taylor told a close friend. “We sat on his sofa and I could tell he wanted to get it on but he seemed reluctant to make the first move. I became the aggressor…. After a heavy make-out session on the sofa, we went into the bedroom.”

The book, which paints a far from flattering picture of the actress, who died last year at age 79, claims the JFK threesome occurred after a naked swim in the president’s pool. Both JFK and Stack were married at the time of the alleged dalliance.

Taylor was infamous for her many trips down the aisle, having wed seven times, but the book claims she was even more prolific when it came to her out of wedlock dalliances, linking her to Tony Curtis, Errol Flyn, Paul Newman, Frank Sinatra and Peter Lawford among many, many others.